Pup Hears a Noise

Pup is trying to take a nap, but a mysterious sound keeps waking him up. Chirp! Chirp! What could be making that noise? Pup sets off on a search through the grass, meeting different animal friends along the way. He finds Trunk, Spike, and even some birds, but none of them are making the chirping sound. Can Pup discover who is responsible for all that noise so he can finally get some rest?